Interims report about the 777 crash at Heathrow

You may remember the crash at Heathrow, where an 777 landed short of the runway. The UK’s Air Accidents Investigation Branch published an report to document the actual state of the investigation. At the moment, they think that ice buildup in the fuel system took out both engines. This can happen as fuel contains a certain amount of water. But the ice buildup is a little bit strange, as the aircraft was operated within the certified operational envelope, thus the AAIB already recommended that the aircraft security authorities should look after this issue not only for the 777 with Trent engines, but for future certifications.